Last reviewed: 2026-04-17 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Alliant Blue Dot powder is a double-base, flake-cut smokeless propellant engineered for magnum shotshell loads across 10, 12, 16, 20, and 28 gauge platforms. You also use it in magnum handgun cartridges where published data supports the pairing. The flake geometry meters consistently through progressive shotshell presses, and the burn rate sits in the medium-fast range — hot enough to move heavy shot columns and slugs without spiking chamber pressure. Alliant Powder manufactures Blue Dot in the United States, and the formulation has remained stable for decades, so your load data from ten years ago still applies today.
Powder Profile
Blue Dot’s double-base chemistry combines nitrocellulose and nitroglycerin, which produces higher energy per grain than single-base propellants. You see this advantage in dense shot loads — 1⅝ oz. of steel, 2 oz. of lead, or heavy buckshot patterns all benefit from the extra push. The powder meters through Dillon, MEC, and Lee shotshell presses without clumping, and the flake size prevents bridging in charge bars. Primers ignite the flakes uniformly, so velocity spreads stay narrow — most handloaders report standard deviations under 30 fps with proper technique. For handgun work, Blue Dot pairs with heavy bullets in .357 Magnum, .41 Magnum, and .44 Magnum when you follow published load data from Alliant or your reloading manual.
Specs at a Glance
| Spec | Value |
|---|---|
| Type | Double-base smokeless |
| Cut | Flake |
| Burn rate | Medium-fast |
| Primary use | Magnum shotshell (10, 12, 16, 20, 28 ga.) |
| Secondary use | Magnum handgun cartridges |
| Manufacturer | Alliant Powder |
You find Blue Dot data in the latest Alliant load guide and in Lyman, Hornady, and Nosler shotshell manuals. Start at published minimums and work up in half-grain increments, checking for pressure signs after each ladder step. Store the powder in its original container, in a cool and dry location away from ignition sources, and keep the container tightly sealed between reloading sessions. Review our gun powder collection for complementary propellants when you switch gauges or bullet weights.
Who It’s For
Waterfowlers pushing 1⅝ oz. steel through long barrels pick Blue Dot for the velocity it delivers at safe pressures. Turkey hunters running 2 oz. lead through tight chokes appreciate the pattern density the powder produces at 40 yards. Handgun hunters loading heavy cast bullets in .44 Magnum revolvers use Blue Dot when published data calls for it, always cross-referencing multiple sources before charging cases. Trap and skeet shooters typically choose faster powders for 1⅛ oz. target loads, so Blue Dot sees less use on the clay range unless you prefer heavier payloads.
Safe Handling & Compliance
Store powder in a cool, dry location away from heat sources, open flame, and out of reach of unauthorized users. Flammable material — do not expose to sparks, static discharge, or impact. Review California Proposition 65 warnings if you reside in California. Verify current shipping restrictions in your jurisdiction before ordering.
- Treat every firearm as if it is loaded; never point the muzzle at anything you are not willing to destroy; keep your finger off the trigger until ready to fire; be certain of your target and what lies beyond it.
- Consult published load data from Alliant or a current reloading manual before charging any case. Do not exceed maximum listed charges. Work up in small increments and watch for pressure signs.
- Wear safety glasses when handling powder. Keep containers sealed between use. Do not mix propellants or transfer powder between unmarked containers.
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